Page 41 - GRIHA Manual Volume III - Introduction to National Rating System
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34 GRIHA Manual: Volume 3




13.2.7 Lighting level simulation result outputs for all areas to demonstrate lighting level
compliance with BIS (Refer table 13.9)

Table13.9 Format for artiicial lighting level calculation
Space name (should be Room area (m2) Upload required Calculated average Recommended
same as in architectural documents * lighting (lux) levels on lighting as per NBC
drawing) work plane (link to select list of
spaces with NBC 2005
recommended lux levels)


13.2.8 Provide certificates from architect/service consultant on compliance with clause 13.1.4.
13.2.9 Provide certificates from architect/service consultant on compliance with clause 13.1.5.


13.3 Appraisal (maximum points 8 and mandatory points 6)

13.3.1 By adopting appropriate climate-responsive building design with the limited WWR
and/or SRR as mentioned above, and ensuring that all the fenestrations meet the SHGC
requirement of ECBC-2007, as per clause 13.2.3 and 13.2.5. (2 points – mandatory)

13.3.2 Minimum 25% of the living area (as mentioned above) should be daylighted and
adequate level of daylight is provided as prescribed by IS code as per clause 13.1.2 and
13.1.3 (2 points – mandatory) and/or
• If the total daylighted area > 50% of total living area (1 point – additional) and/ or
• If the total daylighted area > 75% of total living area (1 point – additional)


13.3.3 Overdesign of lighting system is avoided as per clause 13.1.5 (2 points – mandatory)

Methodology


The basic approach adopted for optimizing the building design is ‘outside to inside’. The design
analysis starts from the study of site and surrounding. It then moves towards the optimization of
building block, fenestration design, and finally the study of internal design. Therefore, building
design optimization is based on four major components, namely, site and surrounding, building
block, fenestration, and internal spaces.
The building design analysis includes several steps to optimize major components of the
building. There are broadly seven analysis conducted under Criterion 13 to arrive at an efficient
building design, which are as follows.
# Climate analysis
# Solar exposure analysis
# Sun path analysis
# Solar heat gain analysis
# Daylight analysis
# Artificial lighting analysis, and
# Daylight integration
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